1. A mixture of marijuana (usually not the chronic, hence the need to do the following) mixed with cocaine. Smoked by way of various means, usually a blunt.
2. A fully shaved vagina that tastes so good that you almost feel the urge to chew on it.

"Bro, I just smoked a fat chewy and it made me want some chewy pretty fucking bad"

"That blunt made my dick shrivel up,, was that a chewy??!!"

"Howd you get that black eye"
"I got kicked in the face when I bit Marissa's chewy"